O : Flexor longus digitorum.
Q : Tibialis anticus tendon.
R : Extensor proprius pollicis tendon.
The outer muscles (Fig. 4) are as follows S : Space filled with loose tissue. T: Peroneus tertius. U: Peroneus brevis. V : Peroneus longus tendon. W : Extensor brevis digitorum. X : Abductor minimi digiti.
Y: Extensor longus digitorum, the tendon which divides into four tendons running to the four outer toes.
Feet and Toes: Fitting of the Shoe (Plate 19).
Muscles and tendons are shown in the front view (Fig. 1), showing in what manner the tendons move the toes, the muscles lying underneath. The blocking shape of a foot pressed hard on the ground with the heel raised is shown in Fig. 3.
Finished sketch of the same at Fig. 2. Note the arch of the foot showing on front (indicated by dotted lines on Fig. 3) ; also the spread of the toes. The effect on the arch of the foot of wearing high- and low-heeled shoes is shown (Figs. 6 and 7) ; note how the arch is pushed up in the former case, and has a different outline from that in Fig. 7.
In Fig. 5, at A, it will be seen that the big toe has an upward tilt, and is on an almost straight line with the inside of the foot. In Fig. 5 small toes incline outwards and downwards, but retain slight tilt on the ends on top.
The most projecting joints are the first row on top (Fig. 4, C), the toes sloping to the ground from that point in a fairly smooth line. Note the outline of bones, indicating their shape, on the sides of toes similar to the bones of the hand, the shadowed receding side intensifying the shape. If a toe were placed in an oblong box each plane could touch the different sides.